SB20260806112 - Information disclosure in Jenkins Webhook Secret Credentials Provider plugin
Published: August 6, 2026
Security Bulletin ID
SB20260806112
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Information disclosure (CVE-ID: CVE-2026-70437)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to the affected plugin does not use a constant-time comparison function when checking whether the provided and expected webhook bearer token are equal. A remote attacker can use statistical methods to obtain a valid webhook bearer token.
Remediation
Install update from vendor's website.